So far as we are aware, nothing has been added to M.’s biography since the Nouvelle biographie generale t. 34 (Paris 1861) col. 431–432: ‘On ne connait ni sa vie ni le nom de son pays natal’. That he had some sort of legal training seems obvious from his De iure liberorum (TUI 1584 t. 8.2), which enjoyed some printing success. He is best known as a philologian, whose notes on Tacitus and on Varro are still occasionally used. The dedicatory epistle of the first edtion of the De iure liberorum (Lyon 1558) is written by one ‘P. Bugnonius Maticensis J.C.’ to one ‘Ianus Angelus Papius’ who is described as of Napoli and ‘I. C. professor apud Cavares Primarium’. We have not pursued any of these references; they might provide further clues.